DESCRIPTION OF THE PLATES. 



PLATE I. 



This is to illustrate the different external Parts 

 of the Horse, which are all named on the plate. 



PLATE IL 



Represents the Skeleton of the Horse, exhibit- 

 ing its Position when covered by the Muscles. 

 Fig. 1, 1. The seven cervical A'ertebra;, or bunes of 

 the neck. 



2. The sternum, or breast-bone. 



3. The scapula, or shoulder-blade. 



4. The humerus, or bona of the arm. 



5. 5. The radius, or bone of the fore-arm. 



6. The ulna, or elbow. 



7. The cartilages of the ribs. 



8. 8, 8. The costEe, or ribs. 



9. The carpus, or seven bones. 



10. 10. The metacarpal, or shank bones : the 

 larger metacarpal, or cannon, or shank- 

 bone, in front ; and the small metacarpal, 

 or splint-bone, bdiinl 



11. The upper pastern. 



12. The lower pastevn. 



13. The coffin-bone. 



14 to 14. The eighteen dorsal vertebrae, or 

 bones of the £i<mo. 



15, The six lumba vertebra, or bones of the 

 loins. 



16, IG. The haimch, consisting of the iiiuin, 



the ischium, and the pubis. 



17, 17. The femur, or thigh-bone. 



18, 18. The stifle-joint, with the patella, or 

 knee-cap. 



19, 19. The tibia, or proper leg-bone. 

 I'O. The fibula. 



21, 21. The tarsus, or hock. 



22, The metatarsal bones of the hind-leg. 



23, 23. The pastern of the hind-feet, includ- 



ing the upper and larger bone, (fig. 23,) 

 the lower pastern, (fig. 25,) and the coffin- 

 bone, (fig. 24.) 

 26, 26. The caudal vertebrae, or tail-bones. 

 See p. 189, &c. 



PLATE in. 



Fig. 1, exhibits the external Anatomy of the 

 Head of the Horse. 



a. a. The orbicularis muscles, which surround the 



eye. 



b. The nasaiis labii superioris. 



c. The dilator magnus. 



d. The dilator nans lateralis. 



e. The zygomaticus. 



f. g. The orbicularis oris. 



h. The buccinator, or trumpeter muscle. 



i. The depressor labii inferioris. 



j. Branches of nerves with small blood vessel?. 



k. The parotid duct. 



1. Position where the jugular artery and parotid 

 duct re-appear. 



m. The vein and artery passing imder the zygo- 

 matic arch. 



n. A branch of the fifth pair of nerves. 



o. The masseter, or chewing muscles. 



p. The stylo-maxillaris, or styloid. 



q. The maxillary gland. 



r. The sub-maxillary and branch of the jugular 

 arteries, and parotid duct passing under the 

 angle of the lower jaw. 



s. The subscapula hyoides. 



t, w. The stemo maxillari^. 



u. The levator humeri 



V. The jugular, or neck vein. 



X. The tendon common to the complexo maoor 

 and the splint tendon. 



y. The superior portion of the ligament of the 

 neck. 



z. The superior portion of the parotid gland. 

 See p. 199. &c. 



Fig, 



a, a. 



b, b. 



f, f. 



2. Representation of the Palate and Teeth. 



The tushes, or canine teeth. 



The incisors, or cutting-teeth. 



The palatine nerve. 



The palate. 



The palatine artery. 

 The palatine vein. 



A strip of the palate dissected up. * 

 h, n. The cheeks. ' 



i. L The molars, or grinding-teeth. 

 Seep. 198, &c. 



Fig. 3. Internal Anatomy of the Horse's Head. 



I. The occipital bone. 



5. The frontal bone. 



:. The nasal bone. 



L The tentorium. 



3. The occipital bone. 



:. The cerebnim, or brain. 



;. The cerebellum, or Uttle brain. 



1. A portion of the medullary substance of th« 



brain. 

 — m. The ligament of the neck, or pack-wax. 

 . The sphenoid bone. 

 :. The cuneiform, or wedge-shaped process, or 



base of the occipital bone. 

 . The medulla oblongata, 

 n. See i. 



1. The point of the atlas bone. 

 ). Fii'st bone of the neck. 

 1. The dentated, or tooth-shaped bone. 

 I The cartilage covering the enti-ance into the 



eustachian tube. 

 '. The spinal marrow. 

 ;, s. The septum nasi. 



, t. The septum nasi cut off at the lower part. 

 I. The palate. 

 •. The interior maxillary bone. 



